diff --git a/libretro-common/formats/png/rpng.c b/libretro-common/formats/png/rpng.c
index b9dda304ff..2517489581 100644
--- a/libretro-common/formats/png/rpng.c
+++ b/libretro-common/formats/png/rpng.c
@@ -689,7 +689,7 @@ static int png_reverse_filter_iterate(rpng_t *rpng, uint32_t **data)
    return png_reverse_filter_regular_iterate(data, &rpng->ihdr, &rpng->process);
 }
 
-int rpng_load_image_argb_process_inflate_init(rpng_t *rpng,
+static int rpng_load_image_argb_process_inflate_init(rpng_t *rpng,
       uint32_t **data, unsigned *width, unsigned *height)
 {
    int zstatus;
diff --git a/libretro-common/formats/png/rpng_internal.h b/libretro-common/formats/png/rpng_internal.h
index b1b459a67b..3dc092b83b 100644
--- a/libretro-common/formats/png/rpng_internal.h
+++ b/libretro-common/formats/png/rpng_internal.h
@@ -68,7 +68,4 @@ static INLINE int paeth(int a, int b, int c)
    return c;
 }
 
-int rpng_load_image_argb_process_inflate_init(rpng_t *rpng,
-      uint32_t **data, unsigned *width, unsigned *height);
-
 #endif